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Problem
Unit is constantly alarming.
Unit cycle on-percentage is
increasing (Compressors are
running more often than
before).
Difficult to close/open the
outer door.
Outer door alignment issues.
Difficult to close/open the inner
door.
Vibration noise.
Rattling noise/Loud noise.
Isotemp -86°C Freezers
Cause
Exterior door is closed but
not sealed completely.
Door open alarm, exterior
door not closing
completely.
Door open alarm, exterior
door is closed but not
sealed completely.
Alarm set points may have
changed.
Ambient conditions.
Warm load (or) over load.
Frequent and prolonged
door openings.
Unit is not level.
Frost accumulated on outer
door gasket.
Door latch problem.
Frost accumulated around
inner door.
Inner door latches
damaged.
Unit is not level.
Loose side panels.
Rubber tubing separators
and/or compressor
dampeners may have
loosened.
Solution
Clean any ice build-up on gasket and/or cabinet surface.
Check for punctures or tears on gasket.
Open door completely and immediately close and latch it.
Defrost exterior door gasket and make sure the door is
completely sealed.
Change the set points as required.
Unit performance is directly impacted by these causes
mentioned. Try maintaining ambient conditions, reducing
load, reducing door openings.
Once temperature is stable, cycle dynamics should return
to normal range. If not call service.
Make sure the unit is level.
Refer Leveling in the user manual for levelling procedure.
Scrape the ice occasionally on outer gasket.
Do not puncture gasket.
Ensure door latch is securing. If issue persists, call service.
Remove frost or ice build-up from inner door assembly.
Call service.
Check if the unit is installed in a level area free from vibration.
(Refer Leveling in user manual)
Check side panel screws, tighten them if necessary.
Call service.
Troubleshooting Guide |
19
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